500 Best Applied Mechanics MCQ
Q153). The unit of moments in M.K.S system, is
a).kgm
b).kg/m^2
c).kg/sec^2
d).kg/sec
Correct Answer:
kgm
Explanation:
Q154). The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator
a).eastward
b).northward
c).westward
d).southward
Correct Answer:
eastward
Explanation:
Q155). When a body falls freely under gravitational force, it possesses
a).minimum weight
b).no weight
c).no effect on its weight.
d).maximum weight
Correct Answer:
no effect on its weight.
Explanation:
Q156). A rigid body suspended Vertically at a point and oscillating with a small amplitude under the action of the force of gravity, is called
a).compour pendulum
b).Second’s pendulum
c).none of these.
d).simple pendulum
Correct Answer:
Second’s pendulum
Explanation:
Q157). If a ball which is dropped from a height of 2.25 m on a smooth floor attains the height of bounce equal to 1.00 m, the coefficient of the restitution between the ball and floor, is
a).0.5
b).0.67
c).0.33
d).0.25
Correct Answer:
0.67
Explanation:
Q158). The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is
a).8.88 m/sec
b).10.88 m/sec
c).12.88 m/sec.
d).5.88 m/sec
Correct Answer:
12.88 m/sec.
Explanation:
Q159). The frequency of oscillation on moon as compared to that on earth, will be
a).2.44 times more
b).2.44 times less
c).3 times less
d).3 times more.
Correct Answer:
2.44 times less
Explanation:
Q160). When a body slides down an inclined surface, the acceleration () of the body, is given by
a).f=g
b).f=g sin θ
c).f=g cos θ
d).f=g tan θ
Correct Answer:
f=g sin θ
Explanation: